Updated syntax to avoid compiler warnings
Removed yaml-cpp library.
Updated build flags and a compiler warning with Clang 4.2
Added more checks (-Wextra), fixed compiler warning
Added another useful warning flag
Merge branch 'master' of https://github.com/plfs/plfs-core

Conflicts:
	src/LogicalFS/Container/container_internals.cpp
Removed -Winit-self
Changed datatype to avoid signed/unsigned warning from Intel compiler
Merge pull request #277 from thewacokid/master

Merged yaml-cpp into main plfs lib, updated warning flags